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Explore popular questions from Mental Ability for UPSC. This collection covers Mental Ability previous year UPSC questions hand picked by experienced teachers.

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Q 1. In a group of six women there are four dancers, four vocal musicians, one actress and three violinists. Girija and Vanaja are among the violinists while Jalaja and Shailaja do not know how to play on the violin. Shailaja and Tanuja are among the dancers. Jalaja, Vanaja, Shailaja and Tanuja are all vocal musicians and two of them are also violinists. If Pooja is an actress, who among the following is certainly a dancer and a violinist?

A

Jalaja

B

Pooja

C

Shailaja

Tanuja

Explanation

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Q 2. From her home, Prerna wishes to go to school. From home, she goes towards North and then turns left and then turns right, and finally she turns left and reaches school. In which direction her school is situated with respect to her home?

A

North - east

North - west

C

South - east

D

South - west

Explanation



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Q 3. One evening before sunset two friends Sumit and Mohit were talking to each other face to face. If Mohit’s shadow was exactly to his right side, which direction was Sumit facing?

A

North

South

C

West

D

Data inadequate

Explanation

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Q 4. The length and breadth of a room are 8 m and 6 m respectively. A cat runs along all the four walls and finally along a diagonal in order to catch a rat. How much total distance is covered by the cat?

A

10

B

14

38

D

48

Explanation



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Q 5. A person travels 12 km due North, then 15 km due East, after that 15 km due West and then 18 km due South. How far is he from the starting point?

6 km

B

12 km

C

33 km

D

60 km

Explanation



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Q 6. Choose the missing term shown by?
1, 8, 9, 64, 25, 216, ?, ?

A

49, 64

B

343, 64

49, 512

D

343, 512

Explanation

The odd terms are squares of the numbers 1, 3, 5,.... while the even terms are cubes of the numbers 2, 4, 6,....

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Q 7. Choose the missing term shown by ?
3,6,24,30,63,72,?,132

A

42

B

58

C

90

120

Explanation

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Q 8. Choose the missing term shown by ? 7, 13,27,53,7,213

A

106

107

C

105

D

108

Explanation

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Q 9. Choose the missing term shown by ?
5,8,14,26,?,98

A

62

50

C

40

D

35

Explanation

Each difference is twice the previous difference.

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Q 10. Choose the missing term shown by ?
14, 12,21,?,28,24,35,30

A

16

18

C

20

D

22

Explanation

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Q 11. Choose the missing term shown by ?
3, 4, 5, 5, 12, 13, 7,24, 25, 9, ?

A

16

B

24

C

35

40

Explanation

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Q 12. Choose the missing term shown by ?
J2Z, K4X, I7V, ?, H16R, M22P

L11T

B

L11S

C

L12T

D

G11T

Explanation

The first letters in odd numbered terms form series J, 1, II and in even numbered terms form the series K, L, M. The sequence followed by the numbers is + 2, + 3, + 4, + 5, + 6. The third letter of each term is moved two steps backward to obtain the third letter of the next term.

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Q 13. Choose the missing term shown by ?
3F, 6G, 11I, 18L, ?

A

21O

B

25N

27P

D

27Q

Explanation

The letters in the first, second, third and fourth terms have respectively moved one, two, three and four steps forward to obtain the letter in the subsequent terms. The sequence followed by the numbers is +3, +5, +7, +9.

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Q 14. In a certain code, RADIO is XZOPL and SIIEET is NBGGI, then HEATER is coded as ?

A

BNGZIX

BGZGIX

C

BGZIGX

D

GZBIXZ

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Q 15. Ifin a code, ALTERED is written as ZOGVIVW, then in the same code, how is IVOZGVW written as ?

A

FEATHER

DEARST

C

RELATED

D

BF.IATED

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Q 16. In a certain code, RABBIT is RBDEMY, then HBRSISY is the code for:

A

HAPPENS

HATTERS

C

HAPPINESS

D

HAMBUGS

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Q 17. If VISHAL is coded as 22102111517, then what will be the code for SACHIN ?

A

1925311191

1295111319

C

1925111319

D

1952111319

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Q 18. BUILT

A

ZABMT

ZATMB

C

ZATBM

D

ZTABM

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Q 19. What is the code for 'hospital' in the given code langauge?

A

ba

di

C

ni

D

ga

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Q 20. Pointing to Priya, father of Pritu says, She is the daughter of the daughter of the wife of the only son of the grandfather of my sister. How is Sushma related to Priya if Sushma is the sister of Pritu?

A

Mother

B

Aunt

Niece

D

None of these

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Q 21. A is the uncle of B, who is the daughter of C and C is the daughter-in-law of P. How is A related to P?

A

Brother

B

Son

Son-in-law

D

Data inadequate

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Q 22. Read the following information carefully to answer the questions given below.
(i) 'A + B' means 'A is the father of B'.
(ii) 'A-B' means 'A is the wife of B'.
(iii) 'A x B' means 'A is the brother of B'.
(iv) 'A % B' means 'A is the daughter of B'.
If P - R x S + Q, which of the following is true?

A

P is the daughter of Q

B

Q is the aunt of P

P is the aunt of Q

D

P is the mother of Q

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Q 23. In a line of boys, Ganesh is 12th from the left and Rajan is 15th from the right. They interchange their positions. Now; Rajan is 20th from the right. What is the total no. of boys in the class?

A

30

B

29

C

32

31

Explanation

Total students = [First position of Ganesh+ Second position of Rajan] - 1 = [12 + 20]-1 =31

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Q 24. Manisha ranked sixteenth from the top and twenty-nineth from the bottom among those who has passed an examination. Six boys did not participate in the examination and five failed in it. How many boys were there in the class?

A

40

B

44

C

50

55

Explanation

Number of boys who passed = 16 + 29 - 1 = 44Total number of boys in the class = 44 + 6 + 5 = 55

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Q 25. In question number/letters are placed in figures on the basis of some rules. One place in the figure is indicated by the interrogation sign (?). Find out the correct alternative to replace the question mark and indicate your answer
{tex} \begin{array} { | c | c | c | } \hline 6 & { 9 } & { 15 } \\ \hline 8 & { 12 } & { 20 } \\ \hline 4 & { 6 } & { ? } \\ \hline \end{array} {/tex}

A

5

10

C

15

D

21

Explanation